TY - JOUR
T1 - Bifunctionalized Metal Organic Frameworks, UiO-66-NO2-N (N = -NH2, -(OH)2, -(COOH)2), for Enhanced Adsorption and Selectivity of CO2 and N2
AU - Rada, Zana Hassan
AU - Abid, Hussein Rasool
AU - Sun, Hongqi
AU - Wang, Shaobin
N1 - Publisher Copyright:
© 2015 American Chemical Society.
PY - 2015/7/9
Y1 - 2015/7/9
N2 - Metal organic frameworks (MOFs), UiO-66-NO2 and UiO-66-NO2-N (N = -NH2, -(OH)2, -COOH)2), were synthesized under solvothemal conditions using different functionalized organic linkers. The synthesized samples were further activated by solvent exchange using methanol and chloroform. All samples were characterized by X-ray diffraction, Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), scanning electron microscopy (SEM), and N2 adsorption/desorption. Gas adsorption of CO2 and N2 on all samples has been evaluated at 760 mmHg and different temperatures. It was found that UiO-66-NO2-NH2 by methanol or chloroform activation presented much higher CO2 adsorption than other samples and the adsorption capacities are around (87 and 74) cm3·g-1 on chloroform-activated and methanol-activated samples, respectively, at 273 K and 760 mmHg. In addition, high selectivity of CO2/N2 has been found on chloroform-activated UiO-66-NO2-NH2 giving a factor of 65 while the selectivity of CO2/N2 is only 40 for chloroform-activated UiO-66-NO2.
AB - Metal organic frameworks (MOFs), UiO-66-NO2 and UiO-66-NO2-N (N = -NH2, -(OH)2, -COOH)2), were synthesized under solvothemal conditions using different functionalized organic linkers. The synthesized samples were further activated by solvent exchange using methanol and chloroform. All samples were characterized by X-ray diffraction, Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), scanning electron microscopy (SEM), and N2 adsorption/desorption. Gas adsorption of CO2 and N2 on all samples has been evaluated at 760 mmHg and different temperatures. It was found that UiO-66-NO2-NH2 by methanol or chloroform activation presented much higher CO2 adsorption than other samples and the adsorption capacities are around (87 and 74) cm3·g-1 on chloroform-activated and methanol-activated samples, respectively, at 273 K and 760 mmHg. In addition, high selectivity of CO2/N2 has been found on chloroform-activated UiO-66-NO2-NH2 giving a factor of 65 while the selectivity of CO2/N2 is only 40 for chloroform-activated UiO-66-NO2.
UR - http://www.scopus.com/inward/record.url?scp=84937468271&partnerID=8YFLogxK
U2 - 10.1021/acs.jced.5b00229
DO - 10.1021/acs.jced.5b00229
M3 - Article
AN - SCOPUS:84937468271
SN - 0021-9568
VL - 60
SP - 2152
EP - 2161
JO - Journal of Chemical and Engineering Data
JF - Journal of Chemical and Engineering Data
IS - 7
ER -